What are the causes of zucchini plant death and the control methods?
As cultivation levels improve, many vegetables can be brought to market out of season, and their planting areas are becoming larger and larger, but along with this comes the gradual worsening of diseases. The phenomenon of zucchini plant death causes farmers great headaches. Below, follow the editor to take a look at the control methods for zucchini plant death.
I. Causes of plant death
1. Improper fertilization
Many farmers mostly use chemical fertilizers during production, which causes the soil's organic matter content to continuously decrease, the soil to become compacted, beneficial bacteria to gradually decrease, and harmful bacteria to increase, making diseases worse and leading to zucchini plant death.
2. Gummy stem blight
This disease mainly harms the leaves and stems, followed by the fruit. When the leaves are affected, round or irregular lesions appear, and in the later stage the lesions crack open, scattering many small spots. After the stems are affected, oily lesions appear at the stem nodes, mainly secreting amber-colored gum. After drying, the diseased area does not shrink and split longitudinally. In severe cases, the stems rot and the plants lodge.
II. Control methods
1. Fertilization should be based mainly on organic fertilizer or biological bacterial fertilizer. Before planting, apply 600-800 jin of decomposed farmyard manure per mu as base fertilizer, and at the same time appropriately combine it with calcium, potassium, and boron fertilizers, which can meet the plant's demand for organic matter throughout the entire growth period, increase beneficial bacteria, and reduce diseases.
2. When transplanting, choose good weather. After releasing the seedlings, do not rush to cover with soil. You can use a mixed solution of chitin + thiophanate-methyl + streptomycin to irrigate the planting holes. After 2-3 days, once the root tips are exposed above the soil, then cover with soil. The soil should not be too deep. After that, water and cover with film.
3. Do a good job of watering and fertilizing the plants. In the early stage, focus on root nourishing. It is recommended to apply amino acid or humic acid fertilizers. If conditions permit, fertilizers containing chitin can be used, which can both prevent diseases and insect pests and regulate soil structure.
4. When plants develop gummy stem blight, spray a 500-600 times dilution of thiophanate-methyl or an 800-1000 times dilution of Manguling for control, spraying once every 5 days for 3-4 consecutive times, with good results.
The above is an introduction to the causes of zucchini plant death and control methods. We hope it can help you. To learn more related knowledge, please stay tuned to us.